After many years of professing my preference of Mobil 1 and Supertech filters, mainly on the valueand cost vs. performance, I have found a new combination that gives even better wear results. I still use the Supertech Oil filter. These are premium oil filters for the price. But I now am supporting Castrol Syntec Syntheteic Blend. I have 260,000 miles on an old Dodge, using MObil 1 exclusively. It recently started using the Syntec Blend in it after getting some oil consumption, and the oil consumption went away. I also started using it in my 2001 Dodoge Ram, 5.2L. it has 14,000 miles. The oil analysis came back and the wear numbers were nil, better that any Mobil1 analysis that I had ever done. I am now a believer that it isn't neccesarily the base oil that contributes to better wear performance, it's definetly the additive package. A group 2/3 combination is better for overall engine life. A group 4 is better for the extremes, but if you are an average driver such as me with my truck( drive to work/ occasional towing/ and around town/highway) I believe the grp.2/3 combination is a better choice for engine wear. The Castrol Syntec Blend is rated ACEA A1/A5, which means it has the additive package capable for an extended drain interval. This is the stuff. Give it a try. Good Bye!